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#         ATMEL Microcontroller Software Support 
# ----------------------------------------------------------------------------
# Copyright (c) 2008, Atmel Corporation
#
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# ----------------------------------------------------------------------------
#
# Modified by Krzysztof Sierszecki, Sept 2009

# 	Makefile for compiling SIS-3 Project Example 1

#-------------------------------------------------------------------------------
#		User-modifiable options
#-------------------------------------------------------------------------------

# Chip & board used for compilation
# (can be overriden by adding CHIP=chip and BOARD=board to the command-line)
CHIP  = at91sam7x256
BOARD = sam7-ex256

# Trace level used for compilation
# (can be overriden by adding TRACE_LEVEL=#number to the command-line)
# TRACE_LEVEL_DEBUG      5
# TRACE_LEVEL_INFO       4
# TRACE_LEVEL_WARNING    3
# TRACE_LEVEL_ERROR      2
# TRACE_LEVEL_FATAL      1
# TRACE_LEVEL_NO_TRACE   0
TRACE_LEVEL = 0

# Optimization level, put in comment for debugging
OPTIMIZATION = -Os

# AT91 library directory
AT91LIB = ../at91lib_1.5

# Output file basename
OUTPUT = SIS3-Project-Example-1-$(BOARD)-$(CHIP)

# Compile for all memories available on the board (this sets $(MEMORIES))
include $(AT91LIB)/boards/$(BOARD)/board.mak

# Output directories
BIN = bin
OBJ = obj

#-------------------------------------------------------------------------------
#		Tools
#-------------------------------------------------------------------------------

# Tool suffix when cross-compiling
CROSS_COMPILE = arm-none-eabi-

# Compilation tools
CC = $(CROSS_COMPILE)gcc
SIZE = $(CROSS_COMPILE)size
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy

# Flags
INCLUDES = -I$(AT91LIB)/boards/$(BOARD) -I$(AT91LIB)/peripherals 
INCLUDES += -I$(AT91LIB)/drivers -I$(AT91LIB)

CFLAGS = -Wall -mlong-calls -ffunction-sections
CFLAGS += -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -DTRACE_LEVEL=$(TRACE_LEVEL)
ASFLAGS = -g $(OPTIMIZATION) $(INCLUDES) -D$(CHIP) -D__ASSEMBLY__
LDFLAGS = -g $(OPTIMIZATION) -nostartfiles -Wl,--gc-sections

#-------------------------------------------------------------------------------
#		Files
#-------------------------------------------------------------------------------

# Directories where source files can be found
PERIPH = $(AT91LIB)/peripherals
DRIVERS = $(AT91LIB)/drivers
BOARDS = $(AT91LIB)/boards
UTILITY = $(AT91LIB)/utility

VPATH += $(UTILITY)
VPATH += $(PERIPH)/dbgu $(PERIPH)/pio $(PERIPH)/aic $(PERIPH)/pmc
VPATH += $(PERIPH)/cp15 $(PERIPH)/pit
VPATH += $(DRIVERS)/lcd
VPATH += $(BOARDS)/$(BOARD) $(BOARDS)/$(BOARD)/$(CHIP)

# Objects built from C source files
C_OBJECTS = main.o criticalSection.o
C_OBJECTS += stdio.o
C_OBJECTS += dbgu.o pio.o pit.o aic.o pmc.o cp15.o lcd.o
C_OBJECTS += board_memories.o board_lowlevel.o

# Objects built from Assembly source files
ASM_OBJECTS = board_cstartup.o
ASM_OBJECTS += cp15_asm.o

# Append OBJ and BIN directories to output filename
OUTPUT := $(BIN)/$(OUTPUT)

#-------------------------------------------------------------------------------
#		Rules
#-------------------------------------------------------------------------------

all: $(BIN) $(OBJ) $(MEMORIES)

$(BIN) $(OBJ):
	mkdir $@

define RULES
C_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(C_OBJECTS))
ASM_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(ASM_OBJECTS))

$(1): $$(ASM_OBJECTS_$(1)) $$(C_OBJECTS_$(1))
	$(CC) $(LDFLAGS) -T"$(AT91LIB)/boards/$(BOARD)/$(CHIP)/$$@.lds" -o $(OUTPUT)-$$@.elf $$^
#	$(OBJCOPY) -O binary $(OUTPUT)-$$@.elf $(OUTPUT)-$$@.bin # We do not need *.bin files
	$(SIZE) $$^ $(OUTPUT)-$$@.elf

$$(C_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.c Makefile $(OBJ) $(BIN)
	$(CC) $(CFLAGS) -D$(1) -c -o $$@ $$<

$$(ASM_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.S Makefile $(OBJ) $(BIN)
	$(CC) $(ASFLAGS) -D$(1) -c -o $$@ $$<

endef

$(foreach MEMORY, $(MEMORIES), $(eval $(call RULES,$(MEMORY))))

clean:
	-rm -f $(OBJ)/*.o $(BIN)/*.bin $(BIN)/*.elf

